ˈdæltɒnɪk

Definitions

1. adjective

relating to John Dalton, especially in reference to his theory of atomic weights or his atomic hypothesis

“Daltonic errors in the periodic table led to a revised understanding of element classification.”

2. noun

a unit of atomic weight, especially one of the 26 elements that were recognized as atomic weights in the 19th century

“The discovery of the daltonic weights helped scientists calculate the mass of elements more accurately.”